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Disable the "Hint" option in phkmalloc as default. Recent VM system

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changes have made this too expensive.  This gains about 1.25% on
worldstone on my SMP machine.

Swap-less machines, for instance PicoBSDs, and machines which experience
page-out trafic, check with top(1), will probably want to reenable this
with:
	ln -s H /etc/malloc.conf

Suggested by: alc (&dyson ?)
This commit is contained in:
phk 1999-03-28 14:16:05 +00:00
parent 76ab29871c
commit eed7c97f34
2 changed files with 4 additions and 4 deletions
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4
lib/libc/stdlib/malloc.3
View File

@ -34,7 +34,7 @@
.\" SUCH DAMAGE.
.\"
.\" @(#)malloc.3 8.1 (Berkeley) 6/4/93
.\" $Id: malloc.3,v 1.16 1998/09/14 20:34:34 imp Exp $
.\" $Id: malloc.3,v 1.17 1998/09/16 04:07:31 imp Exp $
.\"
.Dd August 27, 1996
.Dt MALLOC 3
@ -168,7 +168,7 @@ This is intended for debugging and will impact performance negatively.
.It H
Pass a hint to the kernel about pages unused by the allocation functions.
This will help performance if the system is paging excessively. This
option is on by default.
option is off by default.
.It R
Causes the
.Fn realloc

4
lib/libc/stdlib/malloc.c
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@ -6,7 +6,7 @@
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $Id: malloc.c,v 1.42 1998/09/23 21:26:04 dfr Exp $
* $Id: malloc.c,v 1.43 1998/09/30 06:13:59 jb Exp $
*
*/
@ -214,7 +214,7 @@ static int suicide;
static int malloc_realloc;
/* pass the kernel a hint on free pages ? */
static int malloc_hint = 1;
static int malloc_hint = 0;
/* xmalloc behaviour ? */
static int malloc_xmalloc;